:root {
  color-scheme: dark;
  --bg: #07111f;
  --bg-soft: #0b1730;
  --panel: rgba(10, 18, 34, 0.9);
  --panel-soft: #15223c;
  --panel-muted: #0e1a31;
  --border: rgba(125, 146, 180, 0.2);
  --text: #e5eefc;
  --muted: #94a3b8;
  --primary: #67e8f9;
  --primary-strong: #38bdf8;
  --primary-deep: #0f766e;
  --success: #22c55e;
  --error: #f87171;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background:
    radial-gradient(circle at top, rgba(56, 189, 248, 0.14), transparent 34%),
    linear-gradient(180deg, var(--bg-soft) 0%, var(--bg) 50%, #040816 100%);
  color: var(--text);
  min-height: 100vh;
}

code,
pre,
textarea,
input,
select,
button {
  font: inherit;
}

.app {
  max-width: 1080px;
  margin: 0 auto;
  padding: 28px 18px 48px;
}

.hero {
  display: grid;
  gap: 22px;
  margin-bottom: 18px;
  background:
    linear-gradient(135deg, rgba(56, 189, 248, 0.08), rgba(15, 118, 110, 0.08)),
    var(--panel);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 40px;
  margin-bottom: 10px;
  line-height: 1.1;
}

h2 {
  font-size: 20px;
  margin-bottom: 6px;
}

.subtitle,
.hint,
.section-head p {
  color: var(--muted);
  line-height: 1.6;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 24px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.hero-copy {
  max-width: 720px;
}

.hero-actions {
  display: flex;
  justify-content: flex-start;
}

.ghost-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid rgba(103, 232, 249, 0.3);
  color: var(--text);
  text-decoration: none;
  background: rgba(11, 23, 48, 0.75);
}

.ghost-link:hover {
  border-color: rgba(103, 232, 249, 0.65);
  background: rgba(21, 34, 60, 0.95);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.metric-card {
  display: grid;
  gap: 6px;
  padding: 16px;
  border-radius: 18px;
  border: 1px solid rgba(103, 232, 249, 0.12);
  background: rgba(8, 15, 30, 0.65);
}

.metric-label {
  color: var(--muted);
  font-size: 13px;
}

.metric-card strong {
  font-size: 18px;
  color: var(--text);
}

.config-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 14px;
}

.wide-field {
  min-width: 0;
}

.mini-notes {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.mini-note {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: var(--panel-muted);
}

.mini-note strong {
  font-size: 14px;
}

.tab-bar {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  width: 100%;
  margin-bottom: 18px;
  padding: 6px;
  border-radius: 16px;
  background: rgba(11, 23, 48, 0.9);
  border: 1px solid var(--border);
}

.tab-btn {
  background: transparent;
  color: var(--muted);
  border: 1px solid transparent;
}

.tab-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: #082f49;
  border-color: transparent;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.stack {
  display: grid;
  gap: 16px;
}

.inline-fields {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.inline-fields.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.inline-fields.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.form-card {
  display: grid;
  gap: 14px;
  padding: 18px;
  border-radius: 18px;
  border: 1px solid var(--border);
  background: rgba(9, 17, 32, 0.6);
}

label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.help-link {
  color: var(--primary);
  text-decoration: none;
  font-size: 13px;
}

.help-link:hover {
  text-decoration: underline;
}

input,
textarea,
select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(8, 15, 30, 0.9);
  color: var(--text);
}

textarea {
  min-height: 110px;
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--primary);
}

button {
  border: 0;
  border-radius: 14px;
  padding: 12px 16px;
  font-weight: 600;
  cursor: pointer;
}

button:disabled {
  opacity: 0.65;
  cursor: wait;
}

.primary-btn {
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: #082f49;
}

.secondary-btn {
  background: var(--panel-soft);
  color: var(--text);
  border: 1px solid var(--border);
}

.button-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.block-btn {
  width: 100%;
}

.status {
  display: block;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(8, 15, 30, 0.9);
  color: var(--muted);
  margin-bottom: 16px;
}

.status.success {
  color: #dcfce7;
  border-color: rgba(34, 197, 94, 0.45);
  background: rgba(20, 83, 45, 0.35);
}

.status.error {
  color: #fee2e2;
  border-color: rgba(248, 113, 113, 0.45);
  background: rgba(127, 29, 29, 0.35);
}

.image-results {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.image-card {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: rgba(8, 15, 30, 0.95);
}

.image-card img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
}

.image-card .meta {
  display: grid;
  gap: 8px;
  padding: 12px;
}

.image-card a {
  color: var(--primary);
  text-decoration: none;
}

.result-box {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: rgba(8, 15, 30, 0.9);
  margin-top: 12px;
  overflow: hidden;
}

.result-box summary {
  cursor: pointer;
  padding: 12px 14px;
  color: var(--text);
  font-weight: 600;
}

.code-block {
  margin: 0;
  padding: 0 14px 14px;
  white-space: pre-wrap;
  word-break: break-word;
  color: #cbd5e1;
  max-height: 380px;
  overflow: auto;
}

@media (max-width: 720px) {
  .app {
    padding: 20px 14px 36px;
  }

  h1 {
    font-size: 30px;
  }

  .section-head {
    flex-direction: column;
  }

  .config-grid,
  .mini-notes,
  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .inline-fields {
    grid-template-columns: 1fr;
  }

  .inline-fields.two {
    grid-template-columns: 1fr;
  }

  .inline-fields.three {
    grid-template-columns: 1fr;
  }

  .button-row {
    width: 100%;
  }

  .label-row {
    align-items: flex-start;
    flex-direction: column;
  }
}